Ardesia Ardesia is an usefull software for use your desktop as a Sketchpad. You can write, markup and erase, also, of course, you can use your desktop as normal desktop. Also... Free Open Source Windows Linux Capture Screen / Take screenshots Add a feature 3 Like
Gromit-MPX Create annotations by directly drawing on your screen. Helpful to explain something while creating a screencast or animation. Free Linux Ubuntu Annotate screenshots Add a feature 3 Like
Pylote Pylote is a software making it possible to draw on the screen of the computer, like handling various instruments of geometry. Free Mac Windows Linux No features added Add a feature 2 Like
